Structure 40804510201432 · Bossier County, LA

I0020 over US 71 Kcsrr Ramp SW

Carries I0020 over US 71 Kcsrr Ramp SW, 0.4 Mi S Of La 72.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT768 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

768 ft end to end, longest span 118 ft: about 2.1 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a girder bridge.

Built196660 years old
Length768.0 ft234.1 m
Daily traffic71,593counted 2021
Last inspectedNovember 2023every 24 months

Location

StateLouisiana
CountyBossier
Location0.4 Mi S Of La 72
CarriesI0020
CrossesUS 71 Kcsrr Ramp SW
Coordinates32.51367, -93.71360

Physical Characteristics

MaterialSteel Continuous
DesignGirder and Floorbeam
Total Length768.0 ft (234.1 m)
Max Span118.1 ft (36 m)
Deck Width33.5 ft (10.2 m)
Deck Area2387.8 sq m
Main Spans10
Year Built1966

Traffic

Avg Daily Traffic71,593 (2021)
Truck Traffic19%
Lanes On Bridge2
Lanes Under Bridge8

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number040804510201432

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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